1、Michael liked the carving very much, which cost him $2000
A.as twice much
B.much as twice
C.as much twice
D.twice as much
2、When we arrived at the airport, the plane __________
A.already took off
B.took off already
C.had already taken off
D.has already taken off
3、Only when she had accomplished the task __________ that she had made a mistake
A.did she realize
B.she then realized
C.she realized
D.before she realize
4、I find it hard to imagine a time when __________ to solve
A.no problems will be there
B.there will be no problems
C.no problems there will be
D.there no problems will be
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